Cationically photopolymerizable epoxy-functionalized thermoplastic polysilsesquioxanes: synthesis and properties

Abstract

A series of cationically photopolymerizable inorganic–organic hybrid epoxy-functionalized thermoplastic polysilsesquioxanes were synthesized and their thermal, mechanical, optical, and barrier properties investigated.

Architecture of Silsesquioxanes

“…This method has been further used for preparing polyphenylsilsesquioxanes (Lee et al 2012;Kolezynski et al 2013), poly(phenyl-co-mercaptopropyl)silsesquioxane (Lee et al 2013), poly(methacryloxypropyl)silsesquioxane (Lee et al 2014a), and poly(phenyl-co-glycidyloxypropyl)silsesquioxanes (Lee et al 2014b;Kang et al 2015). A series of thiol-ene UV-curable thermoplastic poly(phenyl-comethacryloxypropyl)silsesquioxanes and their blends with poly(phenyl-comercaptopropyl)silsesquioxanes were recently proposed as inorganic-organic hybrid photocurable hard coating formulations .…”

Side-chain engineering of ladder-structured polysilsesquioxane membranes for gas separations

“…(14) where, P copolymer is permeability of copolymer, P A and P B are permeabilities of the homopolymers A and B, respectively, and φ A and φ B are the volume fraction of component A and B, respectively. It should be noted that the free-standing film formation of homopolymer LPSQ is very challenging due to the tandem limitations of mechanical properties and polymer state [62]. For instance, the LPMA82, the case of including extremely high phenyl group segments makes it difficult to characterize the permeability due to its propensity for brittleness.…”

High-Performance and Simply-Synthesized Ladder-Like Structured Methacrylate Siloxane Hybrid Material for Flexible Hard Coating

“…The ladder-structured PSHs have been studied by many groups mainly in Japan; however, inconvenient synthesis methodologies and low yields are still problems [19,20]. Recently, Hwang et al reported the synthesis of various functional ladder-like structured polysilsesquioxanes (LPSQs) synthesized by the sol–gel reaction with a solvent over ten days and compared the thermal and mechanical properties of the LPSQs with POSS, which have carbazole and phenyl groups [21,22,23]. Hwang et al also reported a hybrid ionogel electrolytes using methacrylate LPSQs for lithium ion batteries, and Zhang et al applied the methacrylate-phenyl LPSQs into LED encapsulation [16,24,25].…”